Frog or crossing structure



C. A. PSILANDER FROG OR CROSSING STRUCTURE Filed April 18,1923

2 Sheets-Sheet 1 3mm liar/Pa A? RSI/under July 10,3923 HAMJM c. A. PSILANDER I FROG 0R CROSSING STRUCTURE File'dApril 1a, 1925 2 Sheets-Sheet n Patented uly 1Q, 1923.

inter r'r r ea.

CHARLES A. PSIYLANDEB, or nnsron, PENNSYLVANIA, Assrenoa r wILLIAr/r WI-IAR- DON, JR. & COMPANY, INCORPORATED,

TION OF, PENNSYLVANIA.

OF EASTON, PENNSYLVANIA, A CORPORA- FROG on onos'srive STRUCTURE.

Application filed April 18, 1923. Serial No. 632,891.

To aZZ whomit may concern: v Be it known that I, CHARLES 'A. .PSILAN- DER, a citizen of the United States, residing at 'Easton, in the county of. Northampton and'State. of Pennsylvania, have invented certain new and useful Improvements in Frog or Crossing Structures, of which the following is a specification. I. i I Principal objects of the invention are to provide a'central insert of maganese steel,

or other shock and wear=resisting metal,

which will not crown or bulge under stress oftraflic; toprovidea central insert which is so constructed as to have a certain amount of flexibility of which advantage may be taken, through the medium. of co-operative devices controllable at will,'to prevent or eliminate conditions which make for crowning;'to provide a. central insert which can be applied and removed with facility-and dispatchand without the necessity-of'disturbing the paving or roadway; and to provide simple and effective ing the insert.

Other ob 'ects.as well as thenature, characteristic features and scope of the invent on willbe referred to in the course of the following description in connection with the accompanying drawings, wherein.

Figure 1 is a plan view of a track structure embodying my improvements.

. Fig. 2 is a section on line 2-'2 of Fig. 1.

gig. 3 is a plan view of a modification; an

Fig. 4 is a section on line 1-4 of Fig. 3.

The frog or track structure 5 is provided with a pocket 6 to accommodate a central insert 7. which. asis usual, is formed of manganese steel or other shock and wear res sting metal. The insert 7 has continuous side flanges 8 of reduced section in comparison with the main stock or body portion.

The purpose and effect of this construction is to impart a certain degree of flexibility.

to the insert so that it will be responsive to selective deflection to overcome conditions tending to crowning or bulging. 5

One side of the pocket 6 is formed by an offset extension 9 of the track structure and preferably cast integral therewith. This extension receives a side lock and wedging elements co-operating therewith and'admits of the insert being readily applied and removed without disturbing the paving. The

means for retainwall 10 of the pocket has a recess 11 to receive one of the flanges 8, the other flange co-operating with a similar recess 12 in a removable wall of the pocket. The removable wall may be a locking bar 13 ranging the length of the insert. Its recess 12 also enables the locking bar to engage or underlie the supporting ledge 14.. The locking bar may be secured, for example, by a system of wedges 15 with or without liners 16..

The insert is additionally secured through the vertical clamping action of bolt connections, the present embodiment having a pair of bolts 17 with complemental nuts 18. The

bolts occupy T-slots 19 in the pocket and open slots 20 of the insert flanges. The nuts 18 occupy depressions or countersunk provisions of the insert and are in clamping engagement with the latter. Since, as before stated, thecross-section ofthe insert is relatively reduced or weakened at and in the regions of the bolt connections, the latter may be-availed of at will to adjust the insert even to the extent of bending it in order to prevent or counteract any tendency towards-= crowning. vThe usual plastic'metal filling for the joints or crevices is indicated at 21.

The coextensive recesses 22 in the wedges and locking bar are useful when present to permit the introduction of a crowbar or the like to loosen the elements, after the filling has been melted, preliminary to removal of the insert. Subsequently, when the wedges and locking bar have been withdrawn, there is ample space in the offset extension of the pocket to permit the insert to be shifted laterally a sufficient distance to enable it to clear the recess 11, whereupon it is free to be lifted out of the pocket, assuming that the nuts 18 have been removed.

In the intersection, Figs. 3 and 4, the insert 23 is supported centrally, as at 24, on the bottom of the pocket, but also has relatively weakened marginal supports or flanges 25 controllable at will by bolt connections 26. In this instance there are three bolts, one adjacent the fixed recessed end of the pocket and two opposite the removable recessed wall element 27. The latter may be retained in any suitable way, the additional space afforded by the offset extension of the pocket admitting of wide departure in this respect. By way of example, however, a system of wedges 28 is illustrated.

I Having described the natureand objects v of the invention, I claim 1- A track structure, including a central insert of the flat type having flexible regions in the horizontal plane'thereof whereby it is responsive to deflection to resist crowning.

2. A track structure, including a central insert of the flat type having flexible regions in the horizontal plane thereof whereby it is responsive to deflection to resist crowning,

and means controllable atwill for deflecting it.

3. A central insertof the flat type having .weakenedareas intermediate a main body portion and continuous margins to prevent crowning. I

' ency to crowning, and means controllable at ALA centralinsert having horizontally directed side extensions of reducedxcross-section to provide selective areas responsive to deflection to resist crowning.

, '5. A central insert formed with a full section body and with "continuous side flanges of reduced -cr0ss-sectior'1, whereby ithas suflicient inherentflexibility to respond toselec -tive deflection to resist crowning.

6; A central insert having opposed continuousgs'ideflanges with flexible areas in the "region 'Ofthe bolt connections, whereby it is responsive to deflection to resist crowning;

track structure,"including a m'arginally locked flat central insert, the insert having pre-form'ed flexible areas in the horizontal plane thereof and responsive'to "ver t'icall'y appliedpressure to overcome tendwill for applying such pressure.

8. A tra-ck structure "having a pocket for Y i an insert formed in part by an offset exten- 7 lished or dismantled sion, insert having opposed/continuous side flanges, the pocket havingia fixed re- ;cessed wall and a removable recessed wall which co=operate with said flanges," and means for securing said; elements.

9. A track structure having a pocket to receive an insert and formed in part'by an integral ofiset' extension, said pocket having fixed and movable, recessed wall elements to engage opposed marginal edges of the in 'toisa id .poclretand having opposed side bear ings, said pocket-haying fixed andmovable recessed 1 wall elements. to: accommodate "the side bearings, and means in the ofi-set-eXtension' and co-operating with the movable wall element, wherebyfthe assembly may be estabwithout disturbing the paving.

an insert formedfin part by an, ofiset' extension, said pockethaving opposed means for marginally engaging the insert, including a locking bar in th'exoflflset extension.

an insert formed in part loy gan o-fl'set extension, said po'c'ket havingopposed =inean's" forrnarginally engaging the insert,-including 'a.

locking bar in the offset extension, and re- J taining meansforthelockingban "In testimony whereofI afiix my signature a A PsiIIA-NDERI track structi irehaving'a pocket for 12.; A track structure having a pocket for i 

